Home / 105,229.40-145,220.10-57,487.20

Finding the Fourth Proportional to 105,229.40, 145,220.10 and 57,487.20

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Solution

The fourth proportional to 105,229.40, 145,220.10 and 57,487.20 is: 79,334.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,229.40 : 145,220.10 = 57,487.20 : x
  2. Step 2: Convert to fraction form
    105,229.40/145,220.10 = 57,487.20/x
  3. Step 3: Cross multiply
    105,229.40x = 145,220.10 × 57,487.20
  4. Step 4: Simplify right side
    105,229.40x = 8,348,296,932.72
  5. Step 5: Solve for x
    x = 8,348,296,932.72/105,229.40
  6. Step 6: Final answer
    x = 79,334.26

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.